To make one (especially a member of an audience) feel very excited, nervous, or filled with suspense while they wait to find out what happens next. Often said of a movie or TV show. The image is that of one literally sitting on the front of their chair because they are unable to sit back and relax. More commonly seen as "keep (one) on the edge of (one's) seat." It's not going to win any Oscars, but the film certainly kept us on the edge of our seats the entire time! The scandal has kept everyone on the edge of their chair waiting to see what details emerge next.